Question

A synthetic water was prepared which consist of 1.5 mM CaSO4 (3 meq/l Ca2+, 3 meq/l SO4), 1mM MgSO4 (2 meq/l mg2+, 2 meq/l SO4), and 4 mM NaHCO3 (4 meq/l Na+, 4 meq/l HCO3)

	1	2	3
CaO (mg)	0	102	56
Na2CO3 (mg)	0	86	0

What is the “theoretical” hardness and alkalinity for each solution after softening and filtration but before recarbonation?

Answer 1

孓 4x 50 万